Metalworking tools-means for connecting the cutter to the holder



v0t.13,'1936.` EEEEEEE NG j 2,057,143

KING TOOL- ,..m gli." L;

oct. 13, 1936. E, @Amm Y 2,057,143

METALWORKING TOOL-MEANS FOR CONNECTING THE CUTTER TO THE HOLDER Fiied June 27, 1936 2 sheets-sheet 2 Inventor By/.-M 'Attorney y Patented Oct. 1.3, 1936 TOOLS-MEANS FOR THE CUTTER T0v THE` My invention relates METALWORKING coNNEoTlNG HOLDER orties Emil Gairing, Detroit, Mich., assignor to The Gairng Tool Michigan Company, a corporation of Application June 27, 1936, Serial No. 87,727 s claims.v (orgie-93) to metal -working tools, means for yconnecting the Figure 1 is a plan v adjacent to the drivin iew of the assembled tool g lugs, the upper wall ofv the holder and one of its driving lugs and the upper portion of the locking pin being cut away as indicated in Figure 2,

by the straight lines ing lugs at right angles to the axis ofthe tool.

Figure 3 is a plan and sectionalview of, the

assembled tool, taken on or about Y the broken and straight arcuate lines III-III, of Figure 4,

Figure 4 is a cross- Figure 2, showing the position.

Figure 5 is a detail or the shank and lugs of the the holder.

Figure 6 is a plan sectional view, similar to parts in another relative oss-sectional View through view showing the shank of the cutter, which nts into a corresponding socket Y in the holder.

Figure 7 is a detail wall of the holder sho its operating mechanism.

Figure 8 is a detail section of a part of the wing the locking pin and view of a 'portion of the wall of the socket of the holder looking outwardly as indicated by the arrows, showing the shape of the slot in which the locking pin reciprocates lengthwise of the tool.

The numeral 2 denotes the holder having the usual cavity or socket,

shapedj to receive' and co-act with the shank of the cutter. r'Ihe numerals 3-33 are driving lugs extending inwardly from the wall of 120 to each other.

of the holder atan angle The numeral 4 designates the cutter provided with outwardly extendi spaced 120 apart and the lugs 3 3-3, when ng lugs 5-5-5, angularly adapted to come between engaged in the holder.

The lugs 3 and 5 are rectangular in crosssection,-have radial faces-and are of a circumferential extent that will permit considerable free relative movement of rotation.

The numeral 6 denotes a cavity extending inwardly from the middle of a driven of the lugs 5, and (a designates an inner end of inner end of the socket face of each offset at the said cavity on the side toward the of the holder.

The numeral l indicates a slot extending radially into the wall of but not through said the socket of the holder Wall, and the numeral 8,

a bore extending into the wall of the holder from thel edge'at its outer end, and parallel to the axis thereof. The axis of the bore intersects that of the slot 1, at right angles.

The numeral 9 denotes a smaller bore coaxial with the bore 8, extending radially from the cavity'l, opposite to the bore 8.

'I'he `cavity, T is semicircular at its ends and islonger than wide, as shown most distinctly in Figure 8. KK

. The numeral I6, denotes a pin fitting adapted to reciprocate longitudinally in the slot l, and extends radially intorthe socket of the holder. The pin has a transverse aperture formed therethrough'as shown in broken lines in Figure 8.

The numeral Il indicates a pin having a head Ha, adapted to t The numeral I2 denotes a coil pressure spring in the bore 8, the numeral i2a denotes a screw-threaded plug in the outer end of pressing said head against the pin l0 and forcing the latter toward the inner end of the slot 1.

and when said pin is opposite l engage in said offset at its inner end, said pin" the onset 6e, it is forced into the same by the action of the spring I2.

The pin VII) is adapted to reciprocate freely on the shank I Ib of the pin I I.

What I claim is: f

1. The combination of a holder having a lug extending inwardly from the wall of its socket; a cutter having a lug extending outwardly adapted to engage said i'lrst mentioned lug, a pin extending inwardly from movable in the direction of holder, a slot extending inward from the edge of the lug on the cutter that shall engage the lug on the holder, said pin being adapted to enter said slot when the lug on the cutter moves into engagement with the lug on the holder.

2. The combination of a holder having a lug extending inwardly from ed to engage said first mentioned lug; a pin extending `inwardly from the wall of said holder movablein the direction of the length of said holder, a slotextending inward from the edge of the lug on the cutter that 'shall engage the lug on the holder and having an offset at itsV inner end, said pin being adapted to enter :saidV slot and engage in said offset Ywhen thelug on the cutter moves into engagement with Athe lug on the holder; and a spring acting to press said pin toward the inner end of the holder socket. c

3. The combination of a holder having a lug extending inwardly fromv the wall of its socket; a cutter havinga lug extending 'outwardly .adapted to engage saidrst mentioned lug; a pin extending inwardly from the wall of said holder movable in the direction of the length `of said holder, aslot extending inward from the edge of the lug on the cutter that Vshall engage the lug on the holder and having an offset at'its inner end, said pin being adapted to enter said slot and being adapted to enter vsaid 'slot and-engage in saidofiset when the lug on the cutter moves 'into engagement with the lug; on the holder; and a spring acting to press said'pin toward the inner wall of said offset. Y Y a l Y -4;The combination of a holder having a lug extending inwardly from the wall of ,its socket; a cutter having a lug extending outwardlyadapted to engage said rst mentionedlug; a longitudinal slot in the wall of said holder; a pin in said vslot extending into the holder Vsocket and adapted to reciprocate longitudinally of said slot; a spring adapted to press saidpin in the direction of the inner end of said slot; a slot extending inward from the edge of the lug on the cutter' that shall engage the lug on the holder'and having an offset at its inner end', said pin being the wall of said holder; the length of said theV wall of its socket; a cutter having a lug extending outwardly adaptadapted to enter said slot in the lug extending `from the cutter and be forced into said offset by said spring and against the wall of said offset.

5. The combination of a holder having a lug extending inwardly from the wall of its socket, a cutter having a lug extending outwardly, adapted to engage said first mentioned lug; a longitudinal slot in the wall of said holder; a bore in the wall of said holder extending from the outer edge of said wall into said slot; a pin in said slot extending into Vthe holder socket adapted to reciprocate longitudinally in said slot; a spring in said bore engaging said pin under compression, a slot extending inward from the edge of the lug on the cutter that shall engage the lug on the holder and having an oiset at its inner end, said pin Y being adapted to enter said slot in the lug extending ifrom the cutter and be forced into said offset by said spring and against the wall of said offset.'

Y6. The/combination of arholder having a lug extending inwardly from the wall of its socket; a cutter havinga lug extending outwardly, adapt-V ed to engage said first mentioned lug; Va pin extending inwardlyffrom the wall of said holder movable in thedirection of the length of said holder,ra slot extending inward from the edge of the lug on the cutter that shall engage the lug on theholder and having an offset at its inner end, said pin being adapted to enter said slot and engagelinr'said ofi-set when the lug on the cutter moves into engagement with'the lug on the holder; rand ajspring acting to press said pin toward the inner end of .the rholder sock-et, a wall of said slot being adapted to engage said pin and force it into position to enter said slot.

'1. Ing-an apparatus of the kind described, a Y

holder; a slot extending from the socketrof said holder into the wall thereof; a pin adapted to reciprocate laterally in said slot, a bore extendin the direction o reciprocation of said pin and opening into said slot; said .pin having a transverse -laperture therethrough; and a second piaadapted toreciprocate in said bore and extending into said aperture. f

`BK. In an apparatus Yof the kind described,V a holderaslot extendingY from thesooket of said holder'l into the wall thereof;V a. pin adapted to reciprocateglaterally in-said slot; a bore extending in the direction of reciprocation of said pin and opening into said slot, said pin having a transverse aperture therethrough; and a second pin adapted to reciprocate inr said bore and extending into said. aperture; and a pressure spring in said bore-actingupon said second pin, said sec- .ond pin being adapted to engage the first mentioned pin to actuate the same in the direction of action of said spring. 

